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bigquery.go
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bigquery.go
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// Copyright 2019 Yunion
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package google
import (
"fmt"
"github.com/nyl1001/pkg/errors"
"github.com/nyl1001/pkg/jsonutils"
)
func (self *SGoogleClient) bigqueryPost(resource string, params map[string]string, body jsonutils.JSONObject) (jsonutils.JSONObject, error) {
resource = fmt.Sprintf("projects/%s/%s", self.projectId, resource)
return jsonRequest(self.client, "POST", GOOGLE_BIGQUERY_DOMAIN, GOOGLE_BIGQUERY_API_VERSION, resource, params, body, self.debug)
}
func (self *SGoogleClient) bigqueryList(resource string, params map[string]string) (jsonutils.JSONObject, error) {
return jsonRequest(self.client, "GET", GOOGLE_BIGQUERY_DOMAIN, GOOGLE_BIGQUERY_API_VERSION, resource, params, nil, self.debug)
}
func (self *SGoogleClient) bigqueryGet(resource string) (jsonutils.JSONObject, error) {
return jsonRequest(self.client, "GET", GOOGLE_BIGQUERY_DOMAIN, GOOGLE_BIGQUERY_API_VERSION, resource, nil, nil, self.debug)
}
func (region *SRegion) BigQuery(sql string) ([]jsonutils.JSONObject, error) {
req := struct {
Kind string `json:"kind"`
Query string `json:"query"`
MaxResults string `json:"maxResults"`
UseLegacySql bool `json:"useLegacySql"`
}{
Kind: "query",
Query: sql,
MaxResults: "1",
UseLegacySql: false,
}
resp, err := region.client.bigqueryPost("queries", nil, jsonutils.Marshal(req))
if err != nil {
return nil, errors.Wrap(err, "bigqueryPost")
}
result := SBigQueryResult{}
err = resp.Unmarshal(&result)
if err != nil {
return nil, errors.Wrap(err, "jsonutils.Unmarshal")
}
rows, err := result.GetRows()
if err != nil {
return nil, errors.Wrap(err, "GetRows")
}
return rows, nil
}
type SBigQueryField struct {
Type string `json:"type"`
Name string `json:"name"`
Mode string `json:"mode"`
Fields []SBigQueryField `json:"fields"`
}
type SBigQuerySchema struct {
Fields []SBigQueryField `json:"fields"`
}
type SBigQueryJobReference struct {
}
type SBigQueryResult struct {
CacheHit bool `json:"cacheHit"`
JobComplete bool `json:"jobComplete"`
JobReference SBigQueryJobReference `json:"jobReference"`
Kind string `json:"kind"`
Rows []jsonutils.JSONObject `json:"rows"`
Schema SBigQuerySchema `json:"schema"`
TotalBytesProcessed int64 `json:"totalBytesProcessed"`
totalRows int64 `json:"totalRows"`
}
func (res SBigQueryResult) GetRows() ([]jsonutils.JSONObject, error) {
rows := make([]jsonutils.JSONObject, 0)
for _, r := range res.Rows {
row, err := res.Schema.Parse(r)
if err != nil {
return nil, errors.Wrap(err, "Schema.Parse")
}
rows = append(rows, jsonutils.Marshal(row))
}
return rows, nil
}
func (schema SBigQuerySchema) Parse(r jsonutils.JSONObject) (map[string]jsonutils.JSONObject, error) {
f := SBigQueryField{
Type: "RECORD",
Mode: "NULLABLE",
Name: "",
Fields: schema.Fields,
}
nr := jsonutils.NewDict()
nr.Add(r, "v")
return f.Parse(nr, "")
}
func (f SBigQueryField) Parse(r jsonutils.JSONObject, prefix string) (map[string]jsonutils.JSONObject, error) {
if len(prefix) > 0 {
prefix = prefix + "." + f.Name
} else {
prefix = f.Name
}
ret := make(map[string]jsonutils.JSONObject)
switch f.Type {
case "RECORD":
if f.Mode == "REPEATED" {
items, err := r.GetArray("v")
if err != nil {
return nil, errors.Wrapf(err, "GetArray v %s", r)
}
nf := f
nf.Mode = "NULLABLE"
val := jsonutils.NewArray()
for _, item := range items {
obj, err := nf.Parse(item, "")
if err != nil {
return nil, errors.Wrap(err, "Parse items")
}
val.Add(jsonutils.Marshal(obj))
}
ret[prefix] = val
} else {
items, err := r.GetArray("v", "f")
if err != nil {
return nil, errors.Wrap(err, "GetArray v.f")
}
if len(items) != len(f.Fields) {
return nil, errors.Wrap(errors.ErrServer, "inconsistent items and fields")
}
for i := range f.Fields {
res, err := f.Fields[i].Parse(items[i], prefix)
if err != nil {
return nil, errors.Wrapf(err, "Parse %s", prefix)
}
for k, v := range res {
ret[k] = v
}
}
}
default:
v, err := r.Get("v")
if err != nil {
return nil, errors.Wrap(err, "Get v")
}
ret[prefix] = v
}
return ret, nil
}